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<pre><code class="lang-java"><span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span></span>{
    <span class="hljs-comment">// &#x5B50;&#x7EBF;&#x7A0B;&#x6267;&#x884C;&#x7684;&#x4EFB;&#x52A1;</span>
   <span class="hljs-keyword">new</span> Thread(<span class="hljs-keyword">new</span> Runnable() {
        <span class="hljs-function">Override
        <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">run</span><span class="hljs-params">()</span> </span>{
            <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">10</span>;i++){
                <span class="hljs-comment">// &#x4F7F;&#x7528; synchronized &#x5173;&#x952E;&#x5B57;&#x5B9E;&#x73B0;&#x7EBF;&#x7A0B;&#x7684;&#x4E92;&#x65A5;&#x4F5C;&#x7528;</span>
                <span class="hljs-keyword">synchronized</span> (Object.class){
                    <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j=<span class="hljs-number">0</span>;j&lt;<span class="hljs-number">3</span>;j++){
                        System.out.println(<span class="hljs-string">&quot;sub thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
                    }
                }
            }
        }
    }).start();

    <span class="hljs-comment">// &#x4E3B;&#x7EBF;&#x7A0B;&#x6267;&#x884C;&#x7684;&#x4EFB;&#x52A1;</span>
    <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">10</span>;i++){
        <span class="hljs-comment">// &#x4F7F;&#x7528; synchronized &#x5173;&#x952E;&#x5B57;&#x5B9E;&#x73B0;&#x7EBF;&#x7A0B;&#x7684;&#x4E92;&#x65A5;&#x4F5C;&#x7528;</span>
        <span class="hljs-keyword">synchronized</span> (Object.class){
            <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j=<span class="hljs-number">0</span>;j&lt;<span class="hljs-number">5</span>;j++){
                System.out.println(<span class="hljs-string">&quot;main thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
            }
        }
    }
}
</code></pre>
<p>&#x5982;&#x4E0A;&#x4EE3;&#x7801;&#x4F7F;&#x7528; <code>synchronized</code> &#x5173;&#x952E;&#x5B57;&#x5B9E;&#x73B0;&#x4E86;&#x5B50;&#x7EBF;&#x7A0B;&#x548C;&#x4E3B;&#x7EBF;&#x7A0B;&#x7684;&#x4E92;&#x65A5;&#xFF0C;&#x4F46;&#x662F;&#x8981;&#x662F;&#x5B9E;&#x73B0;&#x7EBF;&#x7A0B;&#x4E4B;&#x95F4;&#x7684;&#x901A;&#x4FE1;&#x597D;&#x50CF;&#x5C31;&#x6BD4;&#x8F83;&#x56F0;&#x96BE;&#x4E86;&#x3002;&#x5E76;&#x4E14;&#x6709;&#x5F88;&#x591A;&#x5197;&#x4F59;&#x4EE3;&#x7801;&#xFF0C;&#x4E5F;&#x4E0D;&#x7B26;&#x5408;&#x9762;&#x5411;&#x5BF9;&#x8C61;&#x7684;&#x601D;&#x60F3;&#x3002;</p>
<blockquote>
<p>&#x8003;&#x8651;&#x5230;&#x7528;&#x5230;&#x5171;&#x540C;&#x6570;&#x636E;&#xFF08;&#x5305;&#x62EC;&#x540C;&#x6B65;&#x9501;&#xFF09;&#x6216;&#x8005;&#x6709;&#x5171;&#x540C;&#x7B97;&#x6CD5;&#x7684;&#x82E5;&#x5E72;&#x4E2A;&#x65B9;&#x6CD5;&#x5E94;&#x8BE5;&#x5F52;&#x5728;&#x540C;&#x4E00;&#x4E2A;&#x7C7B;&#x4E0A;&#xFF0C;&#x8FD9;&#x6837;&#x6B63;&#x597D;&#x4F53;&#x73B0;&#x4E86;&#x7A0B;&#x5E8F;&#x7684;&#x9AD8;&#x5185;&#x805A;&#x3002;</p>
</blockquote>
<p>&#x6839;&#x636E;&#x4EE5;&#x4E0A;&#x539F;&#x5219;&#xFF0C;&#x53EF;&#x4EE5;&#x5C06;&#x5B50;&#x7EBF;&#x7A0B;&#x548C;&#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x4EE3;&#x7801;&#x5F52;&#x5230;&#x4E00;&#x4E2A;&#x7C7B;&#x4E0A;&#x9762;&#x3002;&#x4EE3;&#x7801;&#x4FEE;&#x6539;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-java"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Bussiness</span></span>{
    <span class="hljs-comment">/**
     * &#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x4F7F;&#x7528; synchronized &#x8FDB;&#x884C;&#x4E92;&#x65A5;
     * <span class="hljs-doctag">@param</span> i
     */</span>
    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">synchronized</span> <span class="hljs-keyword">void</span> <span class="hljs-title">sub</span><span class="hljs-params">(<span class="hljs-keyword">int</span> i)</span></span>{
        <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j = <span class="hljs-number">0</span>; j &lt; <span class="hljs-number">3</span>; j++) {
            System.out.println(<span class="hljs-string">&quot;sub thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
        }
    }

    <span class="hljs-comment">/**
     * &#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x4F7F;&#x7528; synchronized &#x8FDB;&#x884C;&#x4E92;&#x65A5;
     * <span class="hljs-doctag">@param</span> i
     */</span>
    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">synchronized</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(<span class="hljs-keyword">int</span> i)</span></span>{
        <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j=<span class="hljs-number">0</span>;j&lt;<span class="hljs-number">5</span>;j++){
            System.out.println(<span class="hljs-string">&quot;main thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
        }
    }
}
</code></pre>
<p>&#x6B64;&#x65F6;&#x5982;&#x679C;&#x5728;&#x5B9E;&#x73B0;&#x7EBF;&#x7A0B;&#x95F4;&#x7684;&#x901A;&#x4FE1;&#x5E94;&#x8BE5;&#x5F88;&#x7B80;&#x5355;&#x7684;&#x4E86;&#x3002;&#x5B8C;&#x6574;&#x5B9E;&#x73B0;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-java"><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">TraditionalThreadCommunication</span> </span>{

    <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">static</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(String[] args)</span> </span>{
        <span class="hljs-keyword">final</span> Bussiness bussiness = <span class="hljs-keyword">new</span> Bussiness();
        <span class="hljs-keyword">new</span> Thread(<span class="hljs-keyword">new</span> Runnable() {
            <span class="hljs-meta">@Override</span>
            <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">run</span><span class="hljs-params">()</span> </span>{
                <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">10</span>;i++){
                    bussiness.sub(i);
                }
            }
        }).start();

        <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i=<span class="hljs-number">0</span>;i&lt;<span class="hljs-number">10</span>;i++){
            bussiness.main(i);
        }
    }

    <span class="hljs-keyword">static</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Bussiness</span></span>{

        <span class="hljs-comment">// &#x9ED8;&#x8BA4;&#x5B50;&#x7EBF;&#x7A0B;&#x5F00;&#x59CB;&#x8FD0;&#x884C;</span>
        <span class="hljs-keyword">boolean</span> bShouldsub = <span class="hljs-keyword">true</span>;
        <span class="hljs-comment">/**
         * &#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x4F7F;&#x7528; synchronized &#x8FDB;&#x884C;&#x4E92;&#x65A5;
         * <span class="hljs-doctag">@param</span> i
         */</span>
        <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">synchronized</span> <span class="hljs-keyword">void</span> <span class="hljs-title">sub</span><span class="hljs-params">(<span class="hljs-keyword">int</span> i)</span></span>{
            <span class="hljs-comment">// &#x5982;&#x679C;&#x4E0D;&#x8BE5;&#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#xFF0C;&#x5219;&#x5B50;&#x7EBF;&#x7A0B;&#x7B49;&#x5F85;</span>
            <span class="hljs-comment">// &#x6B64;&#x5904;&#x4F7F;&#x7528; while &#x662F;&#x4E3A;&#x4E86;&#x9632;&#x6B62;&#x5047;&#x5524;&#x9192;</span>
            <span class="hljs-keyword">while</span> (!bShouldsub){
                <span class="hljs-keyword">try</span> {
                    <span class="hljs-keyword">this</span>.wait();
                } <span class="hljs-keyword">catch</span> (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            <span class="hljs-comment">// &#x5982;&#x679C;&#x8BE5;&#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#xFF0C;&#x5219;&#x6267;&#x884C;&#x4EE3;&#x7801;</span>
            <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j = <span class="hljs-number">0</span>; j &lt; <span class="hljs-number">3</span>; j++) {
                System.out.println(<span class="hljs-string">&quot;sub thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
            }
            <span class="hljs-comment">// &#x5C06;&#x8BE5;&#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x6807;&#x8BC6;&#x6539;&#x6210; false</span>
            bShouldsub = <span class="hljs-keyword">false</span>;
            <span class="hljs-comment">// &#x5524;&#x9192;&#x4E3B;&#x7EBF;&#x7A0B;&#xFF0C;&#x901A;&#x77E5;&#x8BE5;&#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x4E86;</span>
            <span class="hljs-keyword">this</span>.notify();
        }

        <span class="hljs-comment">/**
         * &#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x4F7F;&#x7528; synchronized &#x8FDB;&#x884C;&#x4E92;&#x65A5;
         * <span class="hljs-doctag">@param</span> i
         */</span>
        <span class="hljs-function"><span class="hljs-keyword">public</span> <span class="hljs-keyword">synchronized</span> <span class="hljs-keyword">void</span> <span class="hljs-title">main</span><span class="hljs-params">(<span class="hljs-keyword">int</span> i)</span></span>{
            <span class="hljs-comment">// &#x5982;&#x679C;&#x4E0D;&#x8BE5;&#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#xFF0C;&#x5219;&#x4E3B;&#x7EBF;&#x7A0B;&#x7B49;&#x5F85;</span>
            <span class="hljs-comment">// &#x6B64;&#x5904;&#x4F7F;&#x7528; while &#x662F;&#x4E3A;&#x4E86;&#x9632;&#x6B62;&#x5047;&#x5524;&#x9192;</span>
            <span class="hljs-keyword">while</span> (bShouldsub){
                <span class="hljs-keyword">try</span> {
                    <span class="hljs-keyword">this</span>.wait();
                } <span class="hljs-keyword">catch</span> (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            <span class="hljs-comment">// &#x5982;&#x679C;&#x8BE5;&#x4E3B;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#xFF0C;&#x5219;&#x6267;&#x884C;&#x4EE3;&#x7801;</span>
            <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> j=<span class="hljs-number">0</span>;j&lt;<span class="hljs-number">5</span>;j++){
                System.out.println(<span class="hljs-string">&quot;main thread run of &quot;</span> + j + <span class="hljs-string">&quot; in loop of &quot;</span> + i);
            }
            <span class="hljs-comment">// &#x5C06;&#x8BE5;&#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x7684;&#x6807;&#x8BC6;&#x6539;&#x6210; true</span>
            bShouldsub = <span class="hljs-keyword">true</span>;
            <span class="hljs-comment">// &#x5524;&#x9192;&#x5B50;&#x7EBF;&#x7A0B;&#xFF0C;&#x901A;&#x77E5;&#x8BE5;&#x5B50;&#x7EBF;&#x7A0B;&#x8FD0;&#x884C;&#x4E86;</span>
            <span class="hljs-keyword">this</span>.notify();
        }
    }
}
</code></pre>

                                
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